Added Disconnects functions

BaseCode.c

 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <mpi.h>
 
 #define FIRST 0
@@ -14,11 +15,12 @@ int main(int argc, char* argv[]) {
 	int num_c = atoi(argv[1]);
         MPI_Comm_spawn(argv[0], MPI_ARGV_NULL, num_c, MPI_INFO_NULL, 0, MPI_COMM_WORLD, &spawn, MPI_ERRCODES_IGNORE);
         MPI_Intercomm_merge(spawn, FIRST,  &new_comm);
-	
     } else {
         MPI_Intercomm_merge(spawn, SECOND, &new_comm);
 	MPI_Barrier(MPI_COMM_WORLD);
     }
+    MPI_Comm_disconnect(&spawn);
+    MPI_Comm_disconnect(&new_comm);
 
     MPI_Finalize(); 
 }